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Repair work to a big sinkhole near 14th and F streets will cost the city $2 million. News 4's Tom Sherwood found out why. (Published Tuesday, May 28, 2013)

Updated at 8:37 PM EDT on Tuesday, May 28, 2013

The northbound lanes of 14th Street at F Street in downtown D.C. should reopen in a couple of days.

Northbound 14th Street NW is closed between Pennsylvania Avenue NW and New York Avenue NW and F Street NW is closed between 13th and 15th streets due to repairs to a sink hole that developed a week ago.

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An undetected broken storm drain eroded land under 14th and F, causing a cave in that ruptured a sewer pipe from the 1890s, DC Water said Tuesday.

Repairs are complex. About three-fourths of the intersection needed excavating so crews can fix the broken storm drain, and a second hole developed about 30 feet away.

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The cost to repair is almost $2 million, in part due to crews working around the clock.

The D.C. Department of Transportation advised morning commuters to avoid using the 14th Street Bridge to enter D.C. while repairs continue.